Both, on SharedID [1] and talkr.net [2] have been quite some discussion over potential comment identification resp. authentication systems. The other day I reawakended my crosspost idea based on trust levels with FOAF [3]. SharedID has an interesting demo online, where "a service magically" retrieves your FOAF file to a give email address and finally completes a comment form with the appropriate user data [4].
What I would like here is a common service API to make that service compatible. Oh, no, I haven't forgotten about George [5] Orwell ;-)
Today I found the Trust and Reputation project homepage for FOAF [1]. You can now upload your FOAF file and rate the people you know resp. the ones you have listed in your file. There is a perl script to convert your addressbook to a textfile for an easier conversion to add to the FOAF file [1]. Give it a go and build your own Orkut; at least I could imagine some nice applications. I just had a random thought about a single sign-on management for online services. According to the trust given, my friends could be able or not to post to a certain blog, a calendar, a newsletter or what so ever... Just a thought to reawaken my crosspost idea ;)
Having set up a new category "Crosspost", I will - after having come back from the Gurten Festival [1] - try to implement a parser to let chregu [2] crosspost to my blog.